:root {
  --navy: #0f2a4a;
  --navy-deep: #081b30;
  --navy-2: #16385f;
  --accent: #1fa855;
  --accent-ink: #146b38;
  --paper: #f5f3ee;
  --paper-2: #ece8de;
  --card: #ffffff;
  --ink: #16202b;
  --ink-mute: #5c6b78;
  --line: #e4e0d6;
  --radius: 14px;
  --shadow: 0 18px 44px rgba(8, 27, 48, 0.10);
  --shadow-soft: 0 8px 22px rgba(8, 27, 48, 0.07);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  background: var(--paper);
  color: var(--ink);
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
.container { max-width: 1160px; margin-inline: auto; padding-inline: 1.5rem; }

.display {
  font-family: "Archivo", "Inter", sans-serif;
  font-weight: 800;
  letter-spacing: -0.01em;
  text-wrap: balance;
}
.mono { font-family: "JetBrains Mono", monospace; font-variant-numeric: tabular-nums; }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 40;
  background: rgba(245, 243, 238, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; padding: 0.9rem 0; }
.brand { font-family: "Archivo", sans-serif; font-weight: 800; font-size: 1.25rem; color: var(--navy); text-decoration: none; letter-spacing: -0.01em; }
.brand .dot { color: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 1.8rem; }
.nav-links a { text-decoration: none; color: var(--navy); font-weight: 600; font-size: 0.92rem; }
.nav-links a:hover { color: var(--accent-ink); }
.nav-cta {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: var(--accent); color: #fff; font-weight: 700; font-size: 0.88rem;
  padding: 0.6rem 1.1rem; border-radius: 999px; text-decoration: none; white-space: nowrap;
  transition: filter 0.15s, transform 0.15s;
}
.nav-cta:hover { filter: brightness(1.07); transform: translateY(-1px); }
.nav-toggle { display: none; background: none; border: none; padding: 0.4rem; cursor: pointer; }
.nav-toggle svg { width: 26px; height: 26px; color: var(--navy); }

/* ---------- Hero ---------- */
.hero {
  background: radial-gradient(ellipse 900px 500px at 15% -10%, #123a63 0%, var(--navy-deep) 55%, #061424 100%);
  color: #fff;
  padding: 4rem 0 5rem;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 22px 22px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.5), transparent 70%);
  pointer-events: none;
}
.hero-grid {
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 3rem; align-items: center;
  position: relative; z-index: 1;
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-size: 0.74rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase;
  color: #8fd6a8; margin-bottom: 1rem;
}
.eyebrow::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); display: inline-block; }
.hero h1 { font-size: clamp(2.1rem, 4.6vw, 3.4rem); line-height: 1.08; margin: 0 0 1.1rem; color: #fff; }
.hero h1 .accent { color: var(--accent); }
.hero-sub { font-size: 1.08rem; line-height: 1.6; color: rgba(255,255,255,0.78); max-width: 480px; margin: 0 0 1.8rem; }
.hero-actions { display: flex; gap: 0.9rem; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-weight: 700; font-size: 0.95rem; padding: 0.85rem 1.5rem; border-radius: 999px;
  text-decoration: none; border: none; cursor: pointer; transition: filter 0.15s, transform 0.15s;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { filter: brightness(1.08); transform: translateY(-1px); }
.btn-ghost-dark { background: rgba(255,255,255,0.08); color: #fff; border: 1px solid rgba(255,255,255,0.35); }
.btn-ghost-dark:hover { background: rgba(255,255,255,0.16); }
.btn-outline { background: transparent; color: var(--navy); border: 1.5px solid var(--navy); }
.btn-outline:hover { background: var(--navy); color: #fff; }

/* Calculadora — pieza central */
.calc-card {
  background: #fff; border-radius: 18px; box-shadow: 0 30px 70px rgba(0,0,0,0.35);
  padding: 1.7rem 1.6rem; color: var(--ink); position: relative;
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
}
.calc-card::before {
  content: ""; position: absolute; top: 0; right: 0; width: 22px; height: 22px;
  background: var(--paper-2); clip-path: polygon(0 0, 100% 0, 100% 100%);
}
.calc-tag {
  display: inline-block; font-size: 0.68rem; font-weight: 800; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--accent-ink); background: rgba(31,168,85,0.1);
  padding: 0.25rem 0.6rem; border-radius: 999px; margin-bottom: 0.8rem;
}
.calc-card h3 { font-family: "Archivo", sans-serif; font-size: 1.2rem; margin: 0 0 1.1rem; color: var(--navy); }
.calc-field label { display: block; font-size: 0.82rem; font-weight: 600; color: var(--ink-mute); margin-bottom: 0.5rem; }
.digit-row { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0.5rem; margin-bottom: 1.3rem; }
.digit-btn {
  font-family: "JetBrains Mono", monospace; font-size: 1.15rem; font-weight: 700;
  padding: 0.6rem 0; border-radius: 8px; border: 1.5px solid var(--line); background: var(--paper);
  color: var(--navy); cursor: pointer; transition: all 0.12s;
}
.digit-btn:hover { border-color: var(--accent); }
.digit-btn.is-active { background: var(--navy); color: #fff; border-color: var(--navy); }
.calc-result {
  display: flex; align-items: center; gap: 1rem; background: var(--paper); border-radius: 12px;
  padding: 1rem 1.1rem; border: 1px dashed var(--line);
}
.calc-result .num { font-family: "JetBrains Mono", monospace; font-size: 2.1rem; font-weight: 800; color: var(--accent-ink); line-height: 1; }
.calc-result .txt { font-size: 0.83rem; color: var(--ink-mute); line-height: 1.4; }
.calc-note { font-size: 0.74rem; color: var(--ink-mute); margin: 0.9rem 0 0; line-height: 1.5; }

/* ---------- Chips strip ---------- */
.chips-strip { background: var(--card); border-bottom: 1px solid var(--line); padding: 1.3rem 0; }
.chips-row { display: flex; gap: 0.7rem; flex-wrap: wrap; justify-content: center; }
.chip {
  font-size: 0.82rem; font-weight: 600; color: var(--navy); background: var(--paper);
  border: 1px solid var(--line); border-radius: 999px; padding: 0.4rem 0.9rem;
}

/* ---------- Section shell ---------- */
.section { padding: 5.5rem 0; }
.section-head { max-width: 620px; margin: 0 0 3rem; }
.section-eyebrow { font-size: 0.74rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent-ink); margin: 0 0 0.7rem; }
.section h2 { font-size: clamp(1.7rem, 3.2vw, 2.3rem); color: var(--navy); margin: 0 0 0.8rem; line-height: 1.15; }
.section-lead { color: var(--ink-mute); font-size: 1.02rem; line-height: 1.6; margin: 0; }

/* ---------- Servicios ---------- */
.servicios-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
.servicio-card {
  background: var(--card); border-radius: var(--radius); padding: 1.6rem; box-shadow: var(--shadow-soft);
  border: 1px solid var(--line);
}
.servicio-icon {
  width: 44px; height: 44px; border-radius: 10px; background: rgba(15,42,74,0.06);
  display: grid; place-items: center; margin-bottom: 1rem; color: var(--navy);
}
.servicio-icon svg { width: 22px; height: 22px; }
.servicio-card h3 { font-family: "Archivo", sans-serif; font-size: 1.02rem; margin: 0 0 0.5rem; color: var(--navy); }
.servicio-card p { font-size: 0.88rem; color: var(--ink-mute); line-height: 1.55; margin: 0; }

/* ---------- Cómo trabajamos ---------- */
.pasos { background: var(--paper-2); }
.pasos-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2.2rem; position: relative; }
.pasos-grid::before {
  content: ""; position: absolute; top: 28px; left: 12%; right: 12%; height: 1px;
  background: repeating-linear-gradient(to right, var(--line) 0 6px, transparent 6px 12px);
}
.paso { position: relative; }
.paso-num {
  width: 56px; height: 56px; border-radius: 50%; background: var(--navy); color: #fff;
  display: grid; place-items: center; font-family: "JetBrains Mono", monospace; font-weight: 700; font-size: 1.1rem;
  margin-bottom: 1.1rem; position: relative; z-index: 1;
}
.paso h3 { font-family: "Archivo", sans-serif; font-size: 1.05rem; color: var(--navy); margin: 0 0 0.5rem; }
.paso p { font-size: 0.9rem; color: var(--ink-mute); line-height: 1.55; margin: 0; }

/* ---------- Planes ---------- */
.planes-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.3rem; align-items: stretch; }
.plan-card {
  background: var(--card); border-radius: var(--radius); padding: 1.8rem; border: 1px solid var(--line);
  display: flex; flex-direction: column; box-shadow: var(--shadow-soft);
}
.plan-card.is-destacado { border-color: var(--accent); box-shadow: 0 20px 46px rgba(31,168,85,0.16); position: relative; }
.plan-badge {
  position: absolute; top: -13px; left: 1.8rem; background: var(--accent); color: #fff;
  font-size: 0.68rem; font-weight: 800; letter-spacing: 0.06em; text-transform: uppercase;
  padding: 0.25rem 0.7rem; border-radius: 999px;
}
.plan-nombre { font-family: "Archivo", sans-serif; font-size: 1.25rem; color: var(--navy); margin: 0 0 0.4rem; }
.plan-para { font-size: 0.82rem; color: var(--ink-mute); margin: 0 0 1.3rem; }
.plan-lista { list-style: none; margin: 0 0 1.6rem; padding: 0; display: flex; flex-direction: column; gap: 0.65rem; flex: 1; }
.plan-lista li { display: flex; gap: 0.6rem; font-size: 0.88rem; color: var(--ink); align-items: flex-start; }
.plan-lista svg { width: 17px; height: 17px; color: var(--accent-ink); flex-shrink: 0; margin-top: 2px; }
.plan-card .btn { width: 100%; justify-content: center; }

/* ---------- Servicios adicionales ---------- */
.extras-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-soft); padding: 2rem 2.2rem; display: flex; align-items: center; gap: 2.5rem;
}
.extras-lista {
  list-style: none; margin: 0; padding: 0; flex: 1;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.85rem 1.5rem;
}
.extras-lista li { display: flex; align-items: center; gap: 0.6rem; font-size: 0.92rem; font-weight: 500; color: var(--ink); }
.extras-lista svg { width: 17px; height: 17px; color: var(--accent-ink); flex-shrink: 0; }
.extras-cta {
  flex-shrink: 0; text-align: center; padding-left: 2.2rem; border-left: 1px dashed var(--line);
  display: flex; flex-direction: column; align-items: center; gap: 0.8rem; min-width: 200px;
}
.extras-cta p { margin: 0; font-size: 0.9rem; font-weight: 600; color: var(--navy); }

@media (max-width: 900px) {
  .extras-card { flex-direction: column; gap: 1.8rem; padding: 1.7rem; }
  .extras-lista { grid-template-columns: repeat(2, 1fr); }
  .extras-cta { border-left: none; border-top: 1px dashed var(--line); padding-left: 0; padding-top: 1.6rem; width: 100%; }
}
@media (max-width: 480px) {
  .extras-lista { grid-template-columns: 1fr; }
}

/* ---------- CTA final ---------- */
.cta-final {
  background: linear-gradient(135deg, var(--navy-deep), var(--navy));
  color: #fff; text-align: center; padding: 5rem 0;
}
.cta-final h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); margin: 0 0 1rem; color: #fff; }
.cta-final p { color: rgba(255,255,255,0.75); font-size: 1.02rem; margin: 0 0 2rem; }
.cta-final .hero-actions { justify-content: center; }

/* ---------- Footer ---------- */
.footer { background: #061424; color: rgba(255,255,255,0.6); padding: 3rem 0 2rem; }
.footer-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 2rem; flex-wrap: wrap; margin-bottom: 2rem; }
.footer .brand { color: #fff; }
.footer-cols { display: flex; gap: 3rem; flex-wrap: wrap; }
.footer-col h4 { font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: rgba(255,255,255,0.85); margin: 0 0 0.8rem; }
.footer-col a, .footer-col p { display: block; font-size: 0.86rem; color: rgba(255,255,255,0.6); text-decoration: none; margin: 0 0 0.5rem; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.12); padding-top: 1.4rem; font-size: 0.78rem; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 0.6rem; }
.footer-bottom a { text-decoration: none; color: rgba(255,255,255,0.55); }

/* ---------- Reveal on scroll ----------
   Contenido visible por defecto siempre (progressive enhancement): solo si JS confirma que el
   IntersectionObserver está activo (clase js-reveal en <html>) se parte de opacity:0, y nunca se
   deja nada permanentemente invisible si el observer no llega a disparar. */
.js-reveal .reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }
.js-reveal .reveal.is-visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .js-reveal .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .servicios-grid { grid-template-columns: repeat(2, 1fr); }
  .planes-grid { grid-template-columns: 1fr; max-width: 420px; margin-inline: auto; }
  .pasos-grid { grid-template-columns: 1fr; gap: 2rem; }
  .pasos-grid::before { display: none; }
  .footer-top { flex-direction: column; }
}
@media (max-width: 720px) {
  .nav-links { position: fixed; top: 64px; left: 0; right: 0; background: var(--paper); flex-direction: column;
    align-items: stretch; padding: 1rem 1.5rem 1.5rem; border-bottom: 1px solid var(--line); gap: 1rem;
    transform: translateY(-8px); opacity: 0; pointer-events: none; transition: opacity 0.15s, transform 0.15s; }
  .nav-links.is-open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-links .nav-cta { align-self: flex-start; }
  .nav-toggle { display: block; }
  .servicios-grid { grid-template-columns: 1fr; }
  .hero { padding: 2.6rem 0 3.2rem; }
  .section { padding: 3.6rem 0; }
  .calc-card { clip-path: none; }
  .calc-card::before { display: none; }
}